GAT Nitraflex Pre-Workout review


GAT Nitraflex Pre-Workout is available in 30 servings. At the time of writing, our best offer is £27.95. If we break this down by size (300g), this works out at £9.32 per 100g of powder. This is extortionate compared to other pre-workout powders, but throughout this review, we will aim to identify whether this really is worth the money.



Most pre-workout powders contain ingredients that pack a powerful flavour upon consumption, to wake you up and make you feel alive. GAT Nitraflex Pre-Workout comes in 12 flavours. We will not write an extensive list, however we will discuss the three flavours we tried for this review.

Firstly, we tried the Blue Raspberry flavour. It was a very tasty flavour and did not have the bitterness that some Blue Raspberry products have. There is a definite kick to it that wakes you up upon consumption, but this is what you want in a pre-workout powder. It is quite sour too.

Secondly, we tried the Black Cherry flavour. This was a really good flavour, it wasn’t too strong and it was actually quite moreish. It was very easy to slowly sip on at a leisurely pace. A lot of pre-workouts have bad flavours which forces you to just get it down. This is not the case, and it’s very easy to drink. It has a slight sourness to it but, again, this is what wakes you up and makes you buzz before your workout.

Finally, we tried the Orange flavour. This was extremely sour and acidic tasting, but with a very strong flavour of orange. It was like putting far too much squash in water. It’s very strong but depending on your preferences, this is probably the best flavour of the three we tried. Needless to say our brains were buzzing after sampling this flavour – we felt like we could run a marathon and back!

Overall, we are happy with the flavours. We are not sure about the Grape flavour, without trying it, as that can be a funny taste. They also have a pina colada flavour which, if you like a tipple, could be the flavour for you.



Pre-workout powders are usually very thin and fine, however they can clump up in the packaging if left exposed.

We mixed 1 serving (10g) in 300ml of water We would not recommend using any other liquid. Milk is too thick (but would curve the edge of the flavour if you are sensitive to the taste!) – however, you could mix this with an isotonic sports drink, just be wary of the sugar! We actually found that 300ml was too much water and it diluted the taste, so 200-250ml could be better, but again this is down to your preferences.

We stirred it and shook it and experienced no bits or floaters. Remember, the amount of liquid will change the taste – less liquid will mean it is slightly thicker with a stronger flavour, but more liquid will mean it is slightly thinner with a weaker flavour.

We would also recommend sipping on this pre-workout over the course of 15-30 minutes for it to have a better effect. Maybe try drinking it slowly whilst you’re driving (or walking) to the gym.

For even better results, you could invest in a blender. We use the NutriBullet 900W blender. It could provide better results for your pre-workout drink, and if you want to add extra ingredients such as oats, this will be the best way to get it done.



This is where it gets interesting. Every pre-workout is different; flavours, sizes, but also the ingredients and how good they are at getting you amped for your workout.

First off, we’ll explore the nutritional information. Per serving, we are getting a lot of different ingredients. We won’t list them all, but we will discuss the ones that we think are the most important. One thing we spotted is that the powder is called ‘Hyperemia and testosterone enhancing powder’. Hyperemia is an increase of blood in the vessels of an organ or tissue in the body – essentially, this powder enhances how much blood gets to your tissues in your muscles when damaged during a workout. Testosterone boosting is also important, as this feeds in to the building of lean muscle.

Per serving, we are getting over 7g of a blend GAT call ‘Nitrafle Proprieceutical Blend’. They have not broken down the individual doses of each ingredient, but it does contain: Citrulline, Citrulline Malate, L-Arginine Malate and L-Arginine AKG, which all improve muscle soreness, exercise capacity, bigger pumps, endurance and performance, as well as providing other health benefits.

We then have an endurance complex within this, which includes (but is not limited to): Beta-Alanine, Caffeine and L-Tyrosine, which again all provide better athletic performance and decrease muscle cramps.

Now we come to the testosterone boosting section, which is called ‘Clinically-studied Testosterone-Enhancing complex’. This is calcium fructoborate, which is patented in the US and derives from boron. According to a 2015 review of boron literature, boron has the following benefits: increases the metabolism of the total testosterone in your body to free testosterone, which is used for many sex-related functions and building muscle.

Secondly, we’ll look at the ingredients. There is one large warning on the GAT website, which states: “This product can expose you to lead, which is known to the State of California to cause birth defects or other reproductive harm.”. Lead is carcinogenic to humans, so just be wary of this. The powder does also include artificial and natural flavours, colours and sweeteners. This is not something that should influence your purchasing decision. GAT do recommend that you test your tolerance to this pre-workout by slowly adding powder and water respectively, as it is very potent.

Finally, we’ll look at the macronutrient profile. Per serving, we are getting 0 calories, which is a lot and it may affect your caloric intake for the day if you are very particular about your diet. You are also getting 0 fat, 0 carbs and 0 protein. This is beneficial if you prefer to get this macronutrients and calories from elsewhere, whilst improving your workout.

We experienced a huge spike in focus and alertness after using this pre-workout powder. We felt that the testosterone boosting formula, in the short-term, is a bit of a placebo, and we would recommend not relying on this powder too much to deliver energy, as too much testosterone is linked to health problems Everyone will respond to these powders differently for a number of reasons (such as caloric intake for that day, water etc.), but we definitely noticed better focus and endurance after taking it. The best part was there was no crash afterwards.

Overall, this is a very good pre-workout powder that delivers a range of important nutrients and aminos. The hyperemia element definitely helps with the pump, and the testosterone booster will have long-term, muscle-building benefits. However, it is very expensive, and it’s now up to you to decide whether you want to spend that money!


Where to buy

There are only a few of places to grab GAT products. However, we’ve narrowed down the best suppliers, with their best offers, and you can take your pick from the ones below. The prices shown are for a 300g tub, and there are different sizes & flavours available.

Get Offers keyboard_arrow_right
By clicking ‘get offer’ you agree that you are aware of being re-directed to a third party website. Suppwow works with partners to provide the best deals possible, but they are subject to change and this is beyond our control. Some partners offer discounts exclusively on their websites. Suppwow only recommend products through impartial reviews, and are not liable for any disputes or problems with respective retailers. Please read our advertiser disclosure for more information.

Reviews chosen for you

Choose a brand

Battle Ready Fuel